Exam (elaborations)
40-hour radiation safety Questions and Answers 2024
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40-hour radiation safety
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40-hour radiation safetyThe symbol R means - answer roentgen
the acronym rad means - answer radiation absorbed dose
the roentgen (R) exposure is measured in - answer air
the symbol mR means - answer milliroentgen
one roentgen or 1 R is equal to - answer1000 milliroentgen
the acronym rem stands for - answer roentgen equivalent man
the initialism QF stands for - answer quality factor
the quality factor for X-rays and gamma rays is - answer1
the quality factor for alpha (ray) particles is - answer20
activity of radioactive material is measured in - answercuries
Becquerels and curies are units of measurement of - answerdecay rate
atoms that have excess energy and are unstable are known as - answerradioactive
elementary particle units with a negative electrical charge and a mass approximately
equal to 1/1840 that of a proton are - answerelectrons
positively charged elementary particles with a mass approximately equal to 1840 times
that of an electron, or 1 AMU, are known as - answerprotons
unchanged elementary particles with a mass nearly equal that of a proton are called -
answerneutrons
the area known as the center of an atom is called the - answernucleus
any byproduct material that is encased in a capsule designed to prevent leakage or
escape of the byproducts material is - answersealed source
a tube through which the radioactive source travels when inside a radiographic
exposure device is a - answerS tube
, survey meters must be calibrated at intervals not to exceed: - answersix months and/or
after instrument servicing except for batter changes
a survey meter must be capable of measuring a range of - answer2 to 1000 mR/h (0.02
to 10 mSv/h)
becquerels and curies are units of measurement of - answeractivity
an analog survey meter must be calibrated on each scale at two points approximately -
answer33% and 66% on the scale's potential
the process that results in the removal of orbital electrons from atoms resulting in the
formation of ion pairs is - answerionization
the fact that gasses bombarded by ionizing radiation become conductors of electrical
current make them useful in - answerdetection equipment
a dosimeter must be capable of reading a range of - answer0-200 mR (0-2mSv)
pocket ion chambers must be capable of reading - answer200 mR (2mSv)
an exposure rate is measured by - answersurvey meter
what dosimeters (dosimetric devices) are last affected by moisture - answerTLDs
full deflection of a survey meter while on batter check means - answermeter may or may
not be working properly
dosimeters must be calibrated at intervals not to exceed - answerannually
rate alarms must be calibrated at intervals not to exceed - answeryearly
a film badge/TLD records what - answertotal dose history for the period worn
when performing radiography in a permanent radiographic installation equipped with an
area monitor, the technician is not required to - answerwear a rate alarm
a direct reading ionization chamber, such as a dosimeter, has the advantage of
providing an - answerimmediate dose history since last time charged
a radiographers survey meter is sowing 0 near the source; it can safely be assumed
that: - answerthe meter is in an inoperable state, the radiographer should retreat from
the source until an operational meter has replaced the suspect meter
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